baber/WOPTO huggingface dataset:
Patent GB-1243569-A (GB)
Title: Manufacturing articles from a mixture of powdered silicon carbide and boron carbide
Inventor: VARZANOV MIKHAIL ANDREEVICH
IPC: C04B35/575
Filed: 1969-12-10
Abstract: 1,243,569. Hot pressing SiC -B 4 C mixtures. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT ABRAZIVOV I. SHLIFOVANIA. Dec. 10, 1969, No. 60337/69. Heading C7D. SiC-B 4 C mixtures are hot pressed in a graphite mould by resistance heating according to the following formula: where Sc = cross-sectional area of moulded powder mixture (cm<SP>2</SP> ) S = cross-sectional area of the mould wall (cm<SP>2</SP>) p = specific electrical resistance (Ohm cm) of mould. The resistance heated graphite mould may also be placed inside a resistance heated graphite tube so as to conform with the formula: where S 1  and S 2  are the cross-sectional areas of the mould wall and heater wall respectively. A powder mixture of 85% SiC and 15% B 4 C was mixed with glycerine and optionally 1À5% silicic acid and hot-pressed to form rods, rings, bushes and nozzles.
Patent GB-1197350-A (GB)
Title: Signal Telemetering System Using Pair Transmission Lines
IPC: G08C19/02
Filed: 1968-12-20
Abstract: 1,197,350. Transistor demodulator circuits. HITACHI Ltd. 20 Dec., 1968 [22 Dec., 1967; 27 Dec., 1967; 10 Jan., 1968 (3); 5Feb., 1968; 8 March, 1968], No. 60783/68. Heading H3T. [Also in Division G1] In a signal telemetering system, a central control station incorporates a D.C. power source 8 and measuring intrument 9, and a two wire transmission line 7 is used both to transmit power to a detector 3 at a detector location and to transmit a signal from the detector representing a quantity to be measured to the instrument. At the detector location is a constant current source 2 energized by the D.C. power signal to provide energizing current to a rectangular wave oscillator 1, whose output in one polarity is used to supply both the detector 3 and its output amplifier 4, while the other polarity output energizes negative feedback arrangements 5. The amplifier 4 provides a D.C. signal into the line 7 which is measured by the instrument 9. The magnitude of this signal is also detected in the impedance element 6 to control the magnitude of the rectangular wave applied to the feedback arrangement 5. The output from this is added in inverse phase to the detector output so that negative feedback is effectively applied to the amplifier. This has the effect of reducing voltage spikes in the output signal from the measurement location so that interference in the operation of the instrument 9 is reduced. The detector may be in the form of a bridge circuit R15-R18, one resistance arm of which varies in accordance with a quantity (e.g. temperature) to be measured. The bridge is energized by rectangular waves from the oscillator 1 and provides an output over transformer 71 which is applied to amplifying stages Q 10 -Q 13 . The rectangular wave signal is synchronously rectified at Q 14  to be only positive going, rectified and smoothed at D 3 , 6 3  and D.C. amplified through Q 15 , Q 16 . The D.C. through resistor 6 is applied to control the amplitude of rectangular signals applied at 7 to transistor Q 17  in inverse phase to those at the detector, and the output from Q 17  is added to the detector output to provide feedback. The feedback may be adjusted, to control the amplifier gain (Fig. 10, not shown) or non linear feedback may be used so that the amplifier output varies in the same way as the quantity being monitored (Fig. 11, not shown).
Patent GB-1244548-A (GB)
Title: Improvements in or relating to microphone amplifiers
IPC: H04M1/60
Filed: 1969-12-16
Abstract: 1,244,548. Substation circuits; transistor amplifiers. SIEMENS A.G. 16 Dec., 1969 [17 Dec., 1968 (2)], No. 61159/69. Headings H3T and H4K. Amplifier arrangement for the microphone in a telephone subset comprises two amplifier circuits arranged in opposed parallel relation and supplied over the line so that whichever polarity of supply potential is applied a respective amplifier is cut off while the other amplifier is made operational. As described, Fig. 1 signal output is taken, and power supplied, over lines A1 and A2, the two amplifiers, comprising transistor T1 to T4 and T5 to T8, are identical, and the input signal from microphone W is supplied in parallel to the two first stages. The non-operational amplifier is biased off by the polarity supplied to the emitter circuits of the transistors and the connection from the microphone to the A.C. negative line is via one or the other of diodes D1 or D2 rendered conductive by the appropriate supply polarity. In a modification, Fig. 2 (not shown) the microphone is connected across the two input circuits connected in series with arrangements to render the input circuit of the inoperative amplifier low impedance according to the supply polarity. An alternative arrangement Fig. 3, uses similar parallel opposed amplifier output stages, T21 to T26, with parallel opposed differential amplifier input stages T17 to T20 rendered alternatively operative by the diodes D5 to D8. It is suggested that by using a symmetrical F.E.T. circuit one of the input stages could be eliminated. The arrangement is suitable for production as an integrated monolithic semi-conductor circuit.
Patent GB-1359154-A (GB)
Title: Enclosed electrical switchgear
IPC: H01H9/02
Filed: 1971-01-30
Abstract: 1359154 Liquid-break switches REYROLLE PARSONS Ltd 25 April 1972 [30 Jan 1971] 61784/70 Heading H1N A heat pipe is used to dissipate the localized heat generated in the arc-extinguishing medium of an electric circuit-breaker, e.g. a multi-break, oil-filled, circuit-breaker. The enclosure 10 has partitions 11 between the phases, the interiors of which partitions form the heat pipes, or the heat pipes are mounted along the top of the partitions, Fig. 2 (not shown), or against the faces of the partitions, Fig. 3 (not shown), or from the cover of the tank, Fig. 4 (not shown). The heat pipe comprises plates 12, 13<SP>1</SP>, spaced by distance-pieces 14 and defining spaces 15 sealed between the plates, the inside walls of which carry capillary layers 16 of wire mesh or porous material saturated with water, methanol, ammonia or other suitable liquid. A radiator plate 22, Fig. 2 (not shown) is provided outside the tank or the cover 26, Fig. 4 (not shown), acts as heat sink and radiator.
Patent GB-1248009-A (GB)
Title: Process of manufacturing structural elements
IPC: C04B28/20
Filed: 1969-12-23
Abstract: 1,248,009. Lime compositions. FABRIEK VAN BOUWMATERIALEN LOEVESTEIN N.V., and RHEINISCH-WESTFALISCHE KALKWERKE A.G. 23 Dec., 1969 [24 Dec., 1968], No. 62755/69. Heading C1H. Hydrothermally cured structural elements are obtained from a mixture of lime (slaked plus unslaked) silica rich sand, water and one or more C 7+  aliphatic polyhydroxy compounds or their borium derivatives. Specified are 1,2,3,4, 5,6 - hexahydroxyhexane - 1 - carboxylates, i.e. the α- and #-isomers D-gluco-D guloheptonate and D-gluco-D idoheptonate.
Patent GB-730868-A (GB)
Abstract: 730,868. Knitting-pins. MORRALL, Ltd., A. March 16, 1953 [March 14, 1952], No. 6637/52. Class 74 (2). A circular knitting-pin has a flexible connection 10 between two metal end parts 11, the connection 10 being secured to each end part by forcing a spigot 12 formed on the connection 10 into a socket 14 in the end part, a cup 13 on the connection also engaging over a reduced portion 17 of the external part of the socket. The parts are secured together by exerting radial pressure to the assembled parts. The surface of the part 17 may be knurled to grip the cup 13 when pressure is erected upon it. The flexible connection may be of nylon and the metal end parts of aluminium or aluminium alloy. Specification 730,866 is referred to.
Patent GB-767491-A (GB)
Abstract: 767,491. Pens for recording-instruments. BAILEY METERS & CONTROLS, Ltd. March 18, 1955 [March 18, 1954], No. 7903/55. Class 146(3). A recording-instrument has a pen with a tip 3 which makes an ink record on a relatively movable chart 2 in dependence of a variable, and a flexible reservoir 9 connected to the pen by a flexible tube 15, which supplies ink from the reservoir to the pen by capillary action. The tip 3 is carried by a pen arm 5 fixed to a bell crank 6 actuated by a link 8 which responds to a variable, e.g., temperature or pressure. The reservoir 9 is mounted on a support 12, such that the ink level therein is alwavs below a point B level with the centre of the chart 2, thereby preventing flooding of ink from the stylus. The tube 15 may be inserted into the reservoir 9 or into a connector 20 carrying a further short tube dipping into the reservoir, such that the reservoir and short tube only require replacement. The reservoir may be of latex or synthetic plastic material, e.g.,polyvinyl chloride and acetate. In a modification, Fig. 2, (not shown) several reservoirs are removably mounted in a casing open at its top and having windows in a side wall to permit observation of the ink level when the reservoirs are of transparent material. Specification 767,492 is referred to.
Patent GB-2027894-A (GB)
Title: Water in brake fluid sensor
IPC: G01N27/12
Filed: 1978-08-08
Abstract: Certain hydraulic fluids have the ability to dissolve relatively large amounts of water. A sensor for dissolved water comprises of a piece of hygroscopic material 1 provided with a pair of spaced apart electrodes 2, 3 and a circuit for measuring changes in resistance or capacitance between the electrodes when the hygroscopic material is immersed in the hydraulic fluid. The material is preferentially hygroscopic with respect to the constituents of brake fluid. Preferably the sensor is a phenolic-paper board with copper strip electrodes. <IMAGE>
Patent GB-2027951-A (GB)
Title: Clock
IPC: G04B19/06
Filed: 1978-08-15
Abstract: A clock housing (10) having a distinctive shape is provided with a bore (14) and with a plurality of spring clips (22) mounted in the housing circumscribing the bore, and a clock and clockwork mechanism (12) having a design on its face associated with the distinctive shape of the housing is removably mounted between the spring clips in the bore. <IMAGE>
Patent GB-2003917-A (GB)
Title: Vessel for heat treating slurries
IPC: C10G1/04
Filed: 1978-09-05
Abstract: A slurry (e.g. of coal in a digestant oil) is fed at a high tangential velocity through an inlet 2 into a heated cylindrical vessel 1, which has a much greater diameter than length and is mounted with its cylindrical axis disposed substantially horizontally, and after following a vertical path through the vessel the slurry is withdrawn through an axial outlet 6. The outlet 6 can be a perforated axial pipe having a cross- sectional area greater than that of the inlet 1 so that the treated slurry is discharged from the vessel at a velocity so low that particulate matter sediments around the outlet and is retained in the vessel longer than the liquid. <IMAGE>
Patent GB-2013453-A (GB)
Title: Sound synthesizing apparatus
IPC: G10L19/00
Filed: 1978-12-15
Abstract: Spaced segments of an analog sound signal the time axis of which is compressed are fed to stores 103, 104, and then the stored signal is read out at a rate which is slower than the rate at which it was written in so that the segments are time expanded. The operation is alternately repeated, whereby the output signal read out from the stores is compiled to provide a continuous output signal, the arrangement being controlled by a microcomputer, 121. The analog sound signal is sampled at the leading and trailing end portion of each sound segment and the samples converted to digital signals. The microcomputer evaluates the similarity of the data concerning the waveform at the trailing end portion of a preceding sound segment and the leading end portion of the succeeding sound segment by evaluating a mean square error or a mutual correlation function of the two sets of data. The phase shift of the succeeding sound segment to be joined to the trailing end portion of the preceding sound segment is determined by the result of the evaluation and applied to correct the time axis of the succeeding sound element, thereby to achieve continuity of the waveform at the junction of the preceding and succeeding sound elements. <IMAGE>
Patent GB-2011564-A (GB)
Title: Anti skid regulating systems for vehicle wheel brakes
IPC: B60T8/58
Filed: 1978-12-22
Abstract: An anti-skid system for vehicle wheel brakes, in which signals for varying the brake pressure are obtained from the rotational behaviour of the vehicle wheels includes a test circuit which, when a signal indicating a tendency of the wheels to lock appears, initiates for at least one wheel brake a test in which the excessively braked wheel goes into a high degree of slip. The test circuit maintains the brake pressure substantially constant during the test and by monitoring said at least one wheel during a retardation phase establishes whether the vehicle wheel is running on a surface with a coeffcient of friction which rises again with increasing of slip from a higher value of slip onwards, as shown in the Figure, and renders the anti-skid control ineffective when such a coefficient of friction is ascertained. <IMAGE>
Patent GB-2012579-A (GB)
Title: Improvements in clothes airers
IPC: D06F57/04
Filed: 1979-01-11
Abstract: A collapsible clothes drier or airer for outside use includes a post 1, and clothes are hung from lines 11 attached to arms 7. The arms 7 are pivotally mounted on a collar 5 slidable on the post, and are supported in an operative position by tie rods 10 pivotally mounted on a fixed collar 8. The drier is erected by moving the collar 5 towards the collar 8, and collapsed by reversing the movement. In known constructions considerable force may be needed to erect and retain the drier in the operative position. To overcome this difficulty a stop member 15 is provided and resiliently urged into a position whereby the collar 5 is maintained in the operative position. The member 15 is retractable to allow the collar 5 movement for erection and collapse of the drier. For collapse the member 15 is retracted manually. <IMAGE>
Patent GB-2016990-A (GB)
Title: Perforating device
IPC: B26F1/36
Filed: 1979-03-09
Abstract: A perforating device for perforating paper comprises a pair of plate portions 1, 2 connected to each other with a gap 4 therebetween, the plate portions 1, 2 having two punches 6 and cooperating dies 7, respectively. The punches are provided with spring means 8 forming guide surfaces 9 extending over the punches for guiding the sheet of paper into the gap and for removing the sheet from the punches after perforation. The device may be provided with apertures 11 for fitting the device to the rings of a loose-leaf file and with locking means for locking the device to the rings. The device may be manufactured from plastics materials. <IMAGE>
Patent GB-2016947-A (GB)
Title: Removing gas from liquid
IPC: C02F1/20
Filed: 1979-03-13
Abstract: An apparatus for removing gas from a liquid such as sewage comprises a siphon having a rising leg 2 arranged coaxially within a falling leg 3. Depending into the siphon from a closure member 4 is a skirt 5. A gas extraction pump 6 is in communication with the siphon by means of a tube 7 which extends through closure member 4 at a location outside the skirt 5. Any foam drawn through with gas in the liquid when the pump 6 is operated will have to pass through liquid since the vacuum is drawn from the pump 6 at a location outside the skirt 5. <IMAGE>
Patent GB-2017962-A (GB)
Title: Holographic recording process
IPC: G03H1/26
Filed: 1979-03-20
Abstract: A holographic framing camera for use in the examination of ultra high speed events in which a short pulse 4 of coherent light is directed obliquely onto an array of beam-splitting elements 6A, 6X so that each element is successively illuminated by the pulse. Each beam- splitting element, which may comprise a hologram, is arranged to split the portion of the pulse impinging on it into an object beam 9A, 9X for illuminating an object 11, and a reference beam 10A, 10X. A photosensitive surface 13 is located to receive successively each of the reference beams directed onto it at an angle characteristic of the particular beam splitting element simultaneously with light scattered by or transmitted through the object 11 from the associated object beam.
Patent GB-2019317-A (GB)
Title: Reversible newspaper press
IPC: B41F31/02
Filed: 1979-04-10
Abstract: A method and apparatus for applying newsprint ink and dampening fluid to a lithographic printing plate (112), the apparatus comprising an ink metering roller (12) in rolling pressure indented relation with a transfer roller (10) having an oleophillic surface and a dampening fluid transfer roller (210) having a hydrophillic surface each of the transfer rollers being driven by a reversible variable speed motor (69, 269). The transfer rollers (10, 210) are in pressure indented relationship with a form roller (90) which transfers a thin film of ink and dampening fluid to the printing plate (112). An excess of ink is supplied to the nip between the metering roller (12) and the transfer roller (10) to produce the thin film of ink which may be further conditioned by an ink storage roller (82) prior to entry of the film of ink into the ink transfer nip (106) between the transfer roller (10) and the form roller (90). By controlling the relative speeds between the form roller (90) and the transfer roller (10), slippage occurs which meters a thin film of ink onto the form roller (90) for transfer and application to the printing plate (112).
Patent GB-2047398-A (GB)
Title: Cooling a light unit intended for use as emergency lighting
IPC: F21V29/00
Filed: 1979-04-19
Abstract: A light unit intended for use as emergency lighting during mains failure comprises a metal body shell (1) which is closed by a light diffuser (2) and contains electrical gear (3) for the light. The electrical gear may include one or more rechargeable batteries. At least a major surface of a part of the electrical gear that is, in use, a major heat producer is held in face-to-face contact with a major inner surface of the shell, whereby the shell acts, in use, as a heat sink. The shell may be made of aluminium and the diffuser of polycarbonate. <IMAGE>
Patent GB-2046527-A (GB)
Title: Pressure responsive switch
IPC: H01H35/38
Filed: 1980-03-20
Abstract: A pressure responsive switch mechanism (11) provided for selectively interrupting a fluid pressure supply to maintain a given minimum fluid pressure in an hydraulic accumulator (13), includes a piston (15) responsive to accumulator pressure against the resilient loading of a coil spring (16) and a free spool (19) co-axial about a strut (18) between the piston (15) and a retainer (17) of the spring (16). The spool (19) actuates plunger switches (22) in response to movement by the piston (15) and retainer (17) and axial free play of the spool (19) ensures that the switches (22) are not actuated as a result of a small change in accumulator pressure. <IMAGE>
Patent GB-2072887-A (GB)
Title: Control of electrical heating elements
IPC: G05D23/24
Filed: 1980-03-24
Abstract: A circuit for controlling the power supplied to a heating element (1), e.g. of a domestic cooker, operates by generating electrical signals indicative of the resistance of the heating element, comparing these signals with a reference signal (VREF) indicative of a desired resistance and hence temperature of the heating element, and varying the power supplied to the heating element accordingly. In one example this variation is achieved by controllably gating a triac (2) using a burst fire controller (3). The resistance measurements are effected in the intervals when the triac (2) is OFF, the voltage at the junction of resistors (5, 6) then being a fraction of the mains voltage which varies in dependence on heater temperature. This voltage is fed via an electronic switch (8) and a buffer (7) to a comparator (9) which adjusts the controller (3). The arrangement may be used to set a maximum temperature for the heater (1), or to adjust the mark-space ratio of the controller to keep the temperature at a set value. <IMAGE>
Patent GB-2056592-A (GB)
Title: Circuit arrangement of an electronic circuit for forming and changing the hysteresis in case of switching gear stages of automatic gearings.
IPC: H03K17/56
Filed: 1980-05-22
Abstract: The circuit is intended to be substantially independent of variations of ambient temperature, with the possibility of achieving a low hysteresis without danger of generating oscillations particularly at "kick-down" conditions, whereby switching points at "zero gas" are not shifted due to hysteresis in dependence on the position of a control element of fuel supply. A vehicle speed signal is applied through a resistor R1 to the non-inverting input of an amplifier 2 the output of which controls a ratio shift switch 3. The inverting input of the amplifier is connected to a reference voltage divider and to the collector of a transistor T the emitter of which is connected to a potentiometer P coupled with the engine fuel control 4. The base of the transistor is connected to the output and to the non-inverting input of the amplifier and also to a kick-down switch S. <IMAGE>
Patent GB-2081078-A (GB)
Title: Hairbrush for blow drying
IPC: A46B15/00
Filed: 1980-06-18
Abstract: A hairbrush construction having an elongate body with a grip portion thereof for holding and manipulating the brush employs bristle elements carried by the body to extend away from one side, and a tapered end portion 69 carried at the leading end of the body to readily enter, gradually separate and lift a shock of hair of a person as the end portion passes into the hair. The end portion is tapered as viewed in both elevation and plan to form a substantiaIly pointed end to the entering portion. in the embodiment shown the end portion is readily releasably coupled to the end of the body and can be disposed in a plurality of positions relative thereto. <IMAGE>
Patent GB-2055475-A (GB)
Title: Electronic sight glass gauging
IPC: G01F23/02
Filed: 1980-07-21
Abstract: Sight glasses for observing levels of media at high temperatures and/or high pressures are well-known for boilers and the like. The invention provides an electrical level sensor probe (72) within a wall of a normally transparent "sight-glass" gauge. The material of the wall and the placement therein of the probe (72) affords electrical insulation and sensitivity of the probe to capacitance variations according to the level of the medium to be gauged. The probe (72) is entirely separated from the interior of the device and ends (74,76) thereof protrude exteriorly for connection to suitable electronic sensing circuitry. Preferably, the probe (72) is moulded into the wall at making thereof. <IMAGE>
Patent GB-2081858-A (GB)
Title: Domestic appliance
IPC: D06F37/28
Filed: 1980-08-08
Abstract: A domestic appliance e.g. a tumbler drier, comprises a cabinet having an opening in a wall thereof for loading articles into the cabinet and unloading them therefrom, and a door (12) with a hinge (13) and a handle 14 having a latch cooperating with a catch plate 22, the hinge 13 and plate 22 having identical fixing means securing them to the cabinet wall whereby their relative positions may be interchanged for the door optionally to be hinged on the opposite side, the door also carrying a projecting pin (18) for actuating a safety switch (19) behind the cabinet wall, the pin being movable to either of two locations on the door to allow the switch to be operated in either hinge position of the door. <IMAGE>
Patent GB-2057652-A (GB)
Title: Radiant tube heating element
IPC: F23M20/00
Filed: 1980-08-29
Abstract: A radiant tube beating element for a furnace comprises an outer tube (1) containing a burner (2), with the exhaust gases leaving through an annular space (5) defined between the burner (2) and the outer tube. The inner surface (14) of the outer tube (1) is provided with an insulating covering (13) at least in the region where the heating element passes through an aperture in the furnace wall (7). <IMAGE>